Parking brake system of vehicle

Abstract

A parking brake system may include a lever mounting bracket including a vertical portion, an operating lever including a vertical fixing portion and a bending-fixing portion, wherein the vertical fixing portion is rotatably coupled to the vertical portion by an end portion of a lever hinge, and the bending-fixing portion is disposed from the vertical portion with a predetermined distance and rotatably coupled to the vertical portion by the other end of the lever hinge, a rotary shaft disposed with a predetermined distance from the lever hinge and having one end connected to the bending-fixing portion, a cable rod having one end connected to a portion of the rotary shaft at a predetermined distance from the vertical portion of the lever mounting bracket, and an equalizer connected to the other end of the cable rod by an adjust nut.

1 . A parking brake system comprising:
 a lever mounting bracket including a vertical portion and fixed to a floor panel at a side of a driver's seat;   an operating lever including a vertical fixing portion and a bending-fixing portion, wherein the vertical fixing portion is rotatably coupled to the vertical portion of the lever mounting bracket by an end portion of a lever hinge, and the bending-fixing portion is disposed from the vertical portion of the lever mounting bracket with a predetermined distance and rotatably coupled to the vertical portion of the lever mounting by the other end of the lever hinge;   a rotary shaft disposed with a predetermined distance from the lever hinge in a radial direction and having one end connected to the bending-fixing portion to rotate with the operating lever with respect to the lever hinge;   a cable rod having one end connected to a portion of the rotary shaft at a predetermined distance from the vertical portion of the lever mounting bracket; and   an equalizer connected to the other end of the cable rod by an adjust nut.   
     
     
         2 . The parking brake system as defined in  claim 1 , wherein the vertical fixing portion and the bending-fixing portion form an inverse U shape and receives the vertical portion of the lever mounting bracket therein. 
     
     
         3 . The parking brake system as defined in  claim 1 , wherein the other end of the rotary shaft passes through a shaft slot of the lever mounting bracket and is fixed to the vertical fixing portion of the operating lever such that the vertical fixing portion and the bending-fixing portion of the operating lever are rotated with respect to the lever hinge together. 
     
     
         4 . The parking brake system as defined in  claim 3 , wherein the shaft slot has an arc slot shape having a predetermined curvature radius with respect to the lever hinge. 
     
     
         5 . The parking brake system as defined in  claim 1 , wherein a shaft protruder radially extending from the rotary shaft is integrally formed in the portion of the rotary shaft at a predetermined distance from the vertical portion of the lever mounting bracket and the one end of the cable rod is fitted on the portion of the rotary shaft between the shaft protruder and the bending fixing portion of the operating lever. 
     
     
         6 . The parking brake system as defined in  claim 1 , wherein the lever hinge includes a bracket support spool integrally formed onto an outer circumference thereof and the vertical portion of the lever mounting bracket is rotatably coupled thereto. 
     
     
         7 . The parking brake system as defined in  claim 1 , wherein the vertical fixing portion and the bending fixing portion of the operating lever include a clamping portion at respective upper portion thereof respectively and an upper portion of the vertical portion in the lever mounting bracket is rotatably engaged between the clamping portions of the vertical fixing portion and the bending fixing portion.